Hyundai Nexo (2024 year). Manual in english

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Reachable Range

You can check the reachable range on the screen

Fuel cell monitoring

You can check the FCEV's Start-up status, battery infor-
mation and power transmission flow between the compo-
nents.

OFEQ018020N

OFEQ018021L

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Hydrogen fuel economy

1. Fuel Efficiency Graph: It shows fuel efficiency informa-

tion of the last 45 minutes.

2. Average Fuel Efficiency (MPGe): It shows the average

fuel efficiency.

3. Initialization: It initializes the fuel efficiency graph infor-

mation.

ECO contribution

You can check the amount of purified air and CO2 reduc-
tion rate.
- Air purification

It shows the amount of air that adult(s) breathe(s) per
day is purified

- CO2 reduction

It shows that the same amount of CO2 exhausted by an
equal class gasoline vehicle is reduced.

OFEQ018022L

OFEQ018023N

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Management

1. Hydrogen Tank : It shows the temperature, pressure

and status of the hydrogen tank while driving.

2. Warning [Destination unreachable warning]

You can set to have the warning pop up when the vehi-

cle cannot reach the destination with the current
remaining hydrogen fuel.

3. FCEV Route [Display FCEV Route Bar on Map]

You can set to indicate the FCEV route and reachable

range on the map screen.

OFEQ018024N

OFEQ018025N

OFEQ018026N

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When the high voltage battery
is weak

When the high voltage battery is
weak due to driving on a hill for a
long time or accelerating and decel-
erating the vehicle repeatedly, the
acceleration performance may be
lower than usual. In this case, be
cautious not to overtake other vehi-
cles.

If the 12 volt battery is dis-
charged

This vehicle does not have a regular
12V battery that needs periodic
replacement. It is lithium ion polymer
type integrated into the high voltage
battery. The vehicle has a 12V bat-
tery protection system that cuts 12V
battery from vehicle draw to prevent
full discharge.
If the 12V battery is discharged, you
should try charging it by pressing the
"12V BATT RESET" button.

Using the 12V battery reset
switch

1. Press the 12V Battery Reset

switch to reconnect the 12V bat-
tery.

2. Start the vehicle within 15 sec-

onds of pressing the 12V Battery
Reset switch.

3. After starting vehicle (

indica-

tor on), move the vehicle outside
and keep the vehicle ready (

)

mode more than 30 minutes safe-
ly to charge the 12V battery.

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If you do not start the vehicle imme-
diately after pressing the 12V Battery
Reset switch, the power of 12V bat-
tery is automatically disconnected
after few seconds to save the 12V
battery from additional discharge. If
the 12V battery is disconnected prior
to starting the vehicle, press the 12V
Battery Reset switch again and then
immediately start the vehicle as
explained.
Repeated use of the 12V Battery
Reset switch without a sufficient ON
cycle (30 Min+) may cause over dis-
charge of the 12V battery, which will
prevent the vehicle from starting. If
the 12V battery is over discharged to
a point that the reset does not work,
try to jump-start the vehicle.

Information

After starting the vehicle (

indica-

tor on), the 12V battery is being
charged whether the accelerator pedal
is depressed or not.

❈

For more details regarding the
jump start, refer to the 'Jump star-
ing' in Owner's manual Chapter 6.

Emergency while driving

If an accident occurs

1. Stop the vehicle, put the gear into

the P (Park) position, set the park-
ing brake, and turn the vehicle off
to prevent the hydrogen and cur-
rent from leaking.

The flow of hydrogen into the fuel

cell stack will be shut off to prevent
the current from being generated.

2. Evacuate to the safety place.
3. Call emergency services for help

and let them know the vehicle is a
Fuel Cell Electric Vehicle.

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If a fire occurs

1. Stop the vehicle, put the gear into

the P(Park) position, set the park-
ing brake, and turn the vehicle off
to prevent the hydrogen and cur-
rent from leaking.

The flow of hydrogen into the fuel

cell stack will be shut off to prevent
the current from being generated.

2. If the fire is small, which can be

extinguished with fire extinguisher,
use carbon dioxide extinguisher.
You can also extinguish the fire
with water when the vehicle power
is turned off.

If the fire is too big to be extinguished
with the fire extinguisher, evacuate
from the vehicle, call the fire depart-
ment, and let them know the vehicle
is a Fuel Cell Electric Vehicle. Do not
come close to the vehicle until the
fire is totally extinguished.

Emergency venting of hydrogen
gas

If the temperature near the safety
valve located at the rear under vehi-
cle is over 110°C caused by a fire or
other reasons, the safety valve will
open to vent hydrogen gas. Venting
the hydrogen gas makes a loud
noise because the venting speed is
very fast. Stay well away from the
vehicle. This jet stream of hydrogen
gas could ignite.

If a submersion in water occurs

If your vehicle was flooded and has
soaked carpeting or water on the
flooring, you should not try to start
the vehicle by pressing the POWER
button.
Call an authorized HYUNDAI dealer.

Do not use water to extinguish a
fire when the vehicle power is
turned on.

Serious electric

shock may result.

WARNING

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If you have a flat tire while driv-
ing

If a tire goes flat while you are driving:
1. Take your foot off the accelerator

pedal and let the vehicle slow
down while driving straight ahead.
Do not apply the brakes immedi-
ately or attempt to pull off the road
as this may cause a loss of con-
trol. When the vehicle has slowed
to such a speed that it is safe to do
so, brake carefully and pull off the
road. Drive off the road as far as
possible and park on firm, level
ground. If you are on a divided
highway, do not park in the median
area between the two traffic lanes.

2. When the vehicle is stopped, turn

on your emergency hazard flash-
ers, set the parking brake and put
the gear into the P (Park) position.

3. Have all passengers get out of the

vehicle. Be sure they all get out on
the side of the vehicle that is away
from traffic.

If the vehicle stalls while driving

1. Reduce your speed gradually,

keeping a straight line. Move cau-
tiously off the road to a safe place.

2. Turn on your emergency flashers.
3. Try to start the vehicle again. If

your vehicle will not start, contact
an authorized HYUNDAI dealer.

If the vehicle stalls at a cross-
road or crossing

If the vehicle stalls at a crossroad or
crossing, set the gear in the N
(Neutral) position and then push the
vehicle to a safe place.

Exhaust pipe

The FCEV is driven by electricity
which is generated when the oxygen
in the air and the hydrogen in the
vehicle is combined. The principle is
the opposite of the electrolysis of
water; the decomposition of water
making hydrogen and oxygen.
The FCEV is emission-free and
water is created when the hydrogen
and oxygen reacts in the process of
making the electricity. Some water
may be discharged through the
exhaust pipe when the vehicle is
turned off after driving. This is normal
but be careful in winter as the puddle
made by the exhausted water may
freeze resulting in accident.
Also, take cautious as the exhausted
steam may reach the vehicle parked
in the back when you turn off the
vehicle in winter.

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Hydrogen station

You can search the hydrogen fueling
station and set the station as the
destination in the Infotainment sys-
tem screen. Select 'Menu-Nearby
POI' in the map screen and select
'Fuel stations' to see the list of sta-
tions. Set the nearest station as the
destination. Check the station opera-
tion status and opening hours before
visiting the station.
Fully refueling the vehicle may be
impossible depending on the station
condition and the reachable range
may change accordingly.
Also, the refueling time may vary
depending on the hydrogen fueling
pressure and ambient temperature.
The reachable range may change
according to the driving environment
(weather, traffic, etc.) and driving
method (sudden acceleration, heat-
ing and air conditioning, etc.).

* Refueling the hydrogen gas must

be done by the person who has
completed the certification course
and training related to the high-
pressure gas. Self-refueling is pro-
hibited.

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Category

Questions

Answers

Vehicle

overview

(10 items)

1. Does a Hydrogen Fuel Cell Electric

Vehicle (FCEV) have similar performance
to standard, non-electric vehicles?

FCEV performance characteristics are generally equivalent to stan-
dard vehicles, but with better noise control.

2. If water floods the fuel cell power module

compartment, due to heavy rain or flood-
ing for example, will it have any effect on
the vehicle?

Every component housed in the fuel cell power module compart-
ment is designed to be waterproof through evaluation which meets
the IP69K standard, so you don't have to worry about any potential
faults or safety problems if water contacts the fuel cell. However, if
the vehicle is fully flooded, have the vehicle checked by an author-
ized HYUNDAI dealer.

3. When starting or stopping the vehicle,

there's a noise. Is this noise cause for
concern?

The sound you hear is normal. The noise emanates from the blower
motor starting up to remove any residual water vapor in the fuel cell
system. Also, when you turn on the vehicle you may hear a brief oper-
ation sound from the hydrogen storage system which is located on the
back of the vehicle. This is a normal sound which is occurred when the
system tries to balance the pressure between the hydrogen tanks.

4. Is there a possibility that extremely cold

weather can prevent vehicle startup?

In most instances, the vehicle can get startup in cold weather with-
out any problems. However, the vehicle may not start if the vehicle is
parked with the ignition off for over a week in cold temperatures. In
this case, turn on the vehicle 2-3 times repeatedly. If you will not be
turning on the ignition for more than a week in cold weather, it is
recommended that you park the vehicle inside a building, if possible.

Notice)

In particular, make sure to park the vehicle indoor when the temper-
ature is below -30°C. If the vehicle is parked outside for over 12
hours under such weather fuel cell components may be damaged.
Also, avoid driving under such weather to prevent damaging the fuel
cell components.

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Questions

Answers

Vehicle

overview

(10 items)

5. Why is there an engine noise at low

speeds, even though there is no engine?

The noise is generated from the air compressor and cooling pump
working to supply air to the fuel cell or it's from Virtual Engine
Sound System (VESS).

6. When turning on and off the vehicle in

cold weather, there's a loud noise. Is this
noise cause for concern?

When you turn on the vehicle or turn off the vehicle in cold weather,
the air compressor removes the generated water inside the fuel cell
system and the noise is generated during this process, which is nor-
mal. In this case, certain amount of water may drain through the
vehicle bottom and exhaust pipe.

7. Why does a noise emanate when the

vehicle moves in reverse?

Normally, the noise is a result of the Virtual Engine Sound System
(VESS) working when the FCEV runs at low velocity (1~12 mph
(1~20 km/h)) after shifting to D or N. However, when shifting to R,
the VESS operates immediately, regardless of vehicle speed. In
addition, a separate warning chime will sound to have the pedestri-
an aware of the approaching vehicle.

8. The FCEV is equipped with a reduction

gear but no transmission. What makes it
different from standard vehicles?

The transmission of standard vehicles delivers power as conditions
require via multiple transmission gears. However, the reduction gear
of the FCEV is designed to deliver power by reducing the motor's
RPM as operating conditions dictate, or to move backwards by
reversing the rotational direction of the shaft.

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Category

Questions

Answers

Vehicle

overview

(10 items)

9. Can driving on test roads or over speed

bumps damage the high voltage battery
and hydrogen tank?

The high voltage battery and hydrogen tank are unlikely to be damaged
under normal driving conditions. However, if the system begins to mal-
function due to a direct and serious vehicular impact, you are informed
of those system errors via warning lights on and the cluster display.

• Service warning light :

10. A water-like liquid is being discharged

from the muffler and bottom of the vehi-
cle. Is it harmful to humans?

Water or vapor discharged is generated from electrochemical reac-
tions in the fuel cell stack, and is not harmful to humans. However,
liquids generated from the reactions can be somewhat acidic, so DO
NOT touch or ingest the liquid!

Also, the water discharged when parking the vehicle indoors may
make a puddle on the ground. Be careful as such puddle can freeze
and result in accident during winter.

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Questions

Answers

Vehicle

Management

(12 items)

11. Can I wash my FCEV with pressurized

water? What if water flows into the fuel
cell power module compartment?

Every component housed in the fuel cell power module compart-
ment is designed to be waterproof like those found in standard vehi-
cles. Therefore, a short circuit of the FCEV cannot happen while
washing the car. However, your FCEV works by utilizing high-voltage
electric power, so it is recommended that you avoid high-pressure car
washes. If the insulation resistance of the FCEV deteriorates due to
car wash, a High voltage warning light may turn on the cluster.

• Service warning light :

12. When washing the fuel cell power mod-

ule compartment, is there any potential
risk of electric shock resulting from a
high-voltage short circuit?

The FCEV is designed to be a waterproof structure, but please
avoid washing the inside of the compartment if possible. Because
there are many high voltage parts in the power module compart-
ment.

13. Can I wash the bottom of the vehicle? If

yes, what should I be aware of?

The FCEV is designed to be a waterproof structure, but please
avoid washing the botttom of the vehicle if possible. Because there
are high voltage cables in the under cover.

14. Can driving with a tire chain affect the

drive motor?

Driving with a tire chain causes no direct damage to the drive motor.

15. How should I jump start the vehicle?

Try charging it by pressing the "12V BATT RESET" button first.
Refer to the "If the 12 volt battery is discharged" in this guide book.
It it doesn't work, refer to the "Jump starting" in the Owner's manual
chapter 6.

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Questions

Answers

Vehicle

Management

(12 items)

16. Does the FCEV use a different coolant

type from that of standard vehicles?
(Difference between Stack cooling
coolant and Device cooling coolant.)

Stack cooling coolant is an exclusive coolant for the fuel cell, which
is characterized by its use of a non-ionic anti-corrosion agent (an
additive) and very low electric conductivity. In comparison, the
device cooling coolant is a coolant similar to that used in standard
vehicles and has a very high electric conductivity.

If the stack cooling coolant is used with the electrical cooling sys-
tem, it will corrode the electrical system parts. If the device cooling
coolant is used with the fuel cell cooling system, it will damage the
system insulation resistor due to high electric conductivity. This car-
ries the additional risk of shocking the driver (electric shock).

17. What should I be aware of when park-

ing the vehicle? Can I park the FCEV in
an enclosed underground parking lot?
(Risk of hydrogen gas leak.)

Hydrogen gas supply is cutoff after Power-OFF to prevent the hydro-
gen gas from leaking.

18. If the FCEV will be parked for a long

period, what should I do?

For long-term parking situations, a high-voltage battery will gradually
lose its charge [low SOC(State Of Charge)], potentially causing igni-
tion failure.

1. In order to minimize the discharge of the high-voltage battery, turn

off the power using the POWER button and disconnect the (-) ter-
minal of the auxiliary battery (12 V) from the vehicle.

2. To recharge the high-voltage battery, it is recommended that you

drive your FCEV two or three times a month, for no less than 10
minutes or 2 miles (3 km) during each session.

3. If the vehicle does not startup, press the "12V BATT RESET" but-

ton or jump start the vehicle. Otherwise contact an authorized
HYUNDAI dealer.

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Questions

Answers

Vehicle

Management

(12 items)

19. What are the do-it-yourself (DIY) main-

tenance items for the FCEV?

DIY Check: Device cooling coolant, Stack cooling coolant, Brake
Fluid, Tire and Wheels

DIY Maintenance: Washer fluid, Air cleaner, Climate control air filter,
Wiper blades, Fuse, Light bulb

20. What should I be aware of when doing

DIY maintenance work?

Be careful not to touch the high-voltage cable (orange color),
coolant, and ion filter.

21. Tell me what the potential effects are of

parking long-term in a cold area (-4 °F
(-20 °C)) for the FCEV, and whether or
not the vehicle can startup under such
conditions.

In most instances, the vehicle can be started in cold weather without
any problems. However, the vehicle may not start if it is parked with
the power off for over a week in cold temperatures. In this case, If
you will not be turning on the vehicle for more than a week in cold
weather, it is recommended that you park the vehicle inside a build-
ing, if possible.

22. What parts must I not touch with

hands? For example, high-voltage
cable, ion filter, etc.?

High-voltage cable (orange color), ion filter, parts with a high voltage
warning sticker.

Also, never touch the hydrogen storage system under the liftgate,
the hydrogen supply pipe under the vehicle and the hydrogen supply
system components on the right side (based on the driver’s position)
of the hood.

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Questions

Answers

Cluster/

Warning Lamp

(9 items)

23. What shall I do if the hydrogen gas leak

warning light turns on on the cluster?

(Red)

If the hydrogen gas leak warning light turns on during "READY" sta-
tus or in driving mode, this indicates a hydrogen gas leak inside the
vehicle. DO NOT lose your composure. Park your vehicle and turn
OFF the vehicle. Then, we recommend that you contact an author-
ized HYUNDAI dealer for service.

24. Can I keep driving the vehicle even if

the hydrogen gas leak warning light
turns on on the cluster?

(Red)

The fuel cell stops working if hydrogen is no longer available. However,
the FCEV can run for an additional distance (About 2 miles (3 km)) in
EV mode where the vehicle runs only on battery power. Mileage in EV
mode can vary depending on the "state of charge" (SOC) of the high
voltage battery, so move your vehicle to the nearest shoulder on the
road. Then, we recommend that you contact an authorized HYUNDAI
dealer for service.

25. While driving to a service center after

the hydrogen gas leak warning light
turns on on the cluster, is it possible
that the vehicle catch fire if there is
something nearby to ignite the leaking
gas (cigarette butt, etc.)?

(Red)

As soon as the hydrogen gas leak warning light appears, the fuel
cell operation is disabled immediately to cut the supply of hydrogen.
This prevents the possibility of a fire occurring.

26. What should I do if a power down warn-

ing light turns on?

If the power down warning light turns on during "READY" status or
in driving mode, power supply to the fuel cell system is cut off. If the
warning light turns on repeatedly when restarting the vehicle after
parking your car on the safe place, we recommend that you contact
an authorized HYUNDAI dealer for service.

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Category

Questions

Answers

Cluster/

Warning Lamp

(9 items)

27. What should I do if the service warning

light turns on?

If the service warning light turns on during "READY" status or in
driving mode, it may indicate a malfunction in operation with any fuel
cell system. We recommend that you contact an authorized
HYUNDAI dealer for service.

28. What should I do if the master warning

light turns on?

If the service warning light turns on when there is a malfuction in
operation in any of the vehicle systems. Please look at the cluster dis-
play for details and we recommend that you contact an authorized
HYUNDAI dealer for service if needed.

29. How much farther (roughly) can I drive

my FCEV when the fuel warning light
turns on? (Remaining mileage)

You can continue driving for an additional 40~55 miles (70~90 km).
It may depend on driving mode.

30. When restarting the vehicle, the "

indicator turns on on the cluster. What
does this mean?

It means that the fuel cell system is working in good order and your
car is ready to drive.

31. Why does the vehicle’s hydrogen tank

have a life expectancy?

The hydrogen tank is frequently refueled with the high pressure
hydrogen gas and the number of times refueling the vehicle is limit-
ed to 5,000 times (or 15 years). The hydrogen storage system
counts the number of times the vehicle is refueled and turns on the
warning light when the vehicle is refueled for over 4,995 times.
Every time the vehicle is turned on the warning message "Replace
hydrogen tank. Maximum number of refill cycles exceeded" is dis-
played on the cluster. The vehicle can be driven about 1-3 million
kilometers until the vehicle is refueled 5,000 times, meaning that the
hydrogen tank is used semi-permanently under common driving
condition.

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Category

Questions

Answers

Hydrogen

System

(7 items)

32. What happens if hydrogen in the hydro-

gen tank is completely consumed?

The fuel cell stops working if hydrogen is no longer available.
However, the FCEV can run for an additional distance (About 2
miles (3 km)) in EV mode where the vehicle runs only on battery
power. Mileage in EV mode can vary depending on the "status of
charge" (SOC) of the high voltage battery, so move your vehicle to
the nearest shoulder on the road. Then, we recommend that you
contact an authorized HYUNDAI dealer for service.

33. If the hydrogen gas tank is fully refu-

eled, how much farther can the FCEV
run?

It can travel as far as 300~370 miles (500~600 km) at a constant
vehicle speed of 50 mph (80 km/h). Realistically though, this travel
distance is shorter due to normal acceleration and deceleration
when driving.

34. Which mechanism allows for the hydro-

gen gas tank to be refueled, and is it
possible to refuel the tank as much as
you need? Is it possible that the tank
may not be fully refueled?

The tank is refueled by utilizing the difference in hydrogen pressure
between the refueling station and the vehicle. When refueling, the
hydrogen gas pressure of the refueling station is higher than that of
the vehicle. The act of refueling can be stopped as desired.
Normally, the gas tank is not fully refueled with hydrogen if the sta-
tion's hydrogen pressure is not sufficiently high, or if the station sys-
tem cannot communicate with the vehicle.

❈

System and the vehicle communicates the temperature and pres-
sure of hydrogen gas via wireless network.

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Category

Questions

Answers

Hydrogen

System

(7 items)

35. In the beginning, when driving the new

vehicle, I hear hissing sounds regularly
from the hood while the vehicle is
stopped. Is this noise cause for con-
cern?

In the beginning, the purity of hydrogen in the hydrogen tank of the
new vehicle may be somewhat low. It is a normal noise which
occurs when the system discharges the hydrogen more frequently
compensating the low hydrogen purity. The fuel efficiency of the new
vehicle may be low in the beginning due to the frequent hydrogen
discharge. However, this is a normal condition. In general, the hydro-
gen purity returns to normal range after refueling 3-4 times.

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Category

Questions

Answers

Hydrogen

System

(7 items)

36. How should I refuel the tank with hydro-

gen gas? And what should I take care
of?

* Close the fuel cap and fuel filler door firmly.

* The gas tank may not be fully filled depending on the conditions of

the hydrogen station.

* Carefully read any precautions about refueling at hydrogen gas

stations.

* Be careful not to cause static electricity when touching the fuel

filler with your hand. (To avoid static electricity, be sure to touch
your bare hand on something metallic as far from the fuel filler as
possible.)

* DO NOT get out of, or go into, your car while the gas tank is being

refueled.

* DO NOT use any mobile device. Fire may occur due to electric

current / radio wave from the mobile device.

* Make sure that the fuel cell system stops working before refueling

the gas tank.

* DO NOT smoke a cigarette or strike a lighter while refueling the

gas tank.

* If you need assistance with refueling the gas tank after completely

consuming all the available fuel in the vehicle, we recommend that
you contact an authorized HYUNDAI dealer.

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Category

Questions

Answers

Hydrogen

System

(7 items)

37. Is it possible that water, oil, etc. may be

introduced to the hydrogen gas tank via
the fuel filler? If yes, what do I need to
do to prevent this?

Normally, water and oil cannot flow into the hydrogen tank via the
fuel filler, but it can flow in while refueling. Be careful not to intro-
duce any contaminants via the fuel filler.

38. While refueling the hydrogen, I hear

irregular abnormal noises. Is this noise
cause for concern?

The hydrogen gas is in high pressure (70 MPa) condition when refu-
eled to the vehicle's storage tank. Therefore, you will hear the sound
of the gas flowing in the beginning. Abnormal noise is occurred due
to the gas flow because of the difference in refueling pressure, etc.
depending on the gas pressure condition at the refueling station and
this is very normal.

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Category

Questions

Answers

Fuel Cell

Stack/High

Voltage

Battery

(4 items)

39. What happens if hydrogen gas leaks

from the fuel cell stack?

(Red)

If hydrogen gas leaks beyond what's tolerable from the fuel cell stack,
a hydrogen sensor installed in the system detects the leak and in
response, turns ON the hydrogen gas leak warning light in the cluster.

40. Can the fuel cell stack explode or burn

out due to overheating?

The fuel cell stack passed a high temperature test and is deemed
safe, so it is unlikely to explode.

41. Which symptoms occur if the fuel cell

system malfunctions?

If the fuel cell system malfunctions, warning lights specific to the
actual problem appear on the cluster display. When this happens,
the vehicle speed may be limited, or the fuel cell system may shut
down. DO NOT lose your composure if this happens. Park your vehi-
cle and turn OFF the vehicle. Then, we recommend that you contact
an authorized HYUNDAI dealer for service.

42. Is the recharge performance of the high

voltage battery reduced depending on
its length of use?

Like any vehicle component, the high voltage battery will decrease
in performance as it ages over time. However, the high voltage bat-
tery of the FCEV is durable enough to work at peak performance
beyond the warranty period.

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Answers

Vehicle

Accidents/

Towing

(5 items)

43. Is there a risk of electric shock from the

high-voltage parts in the event of a colli-
sion or accident?

The FCEV is designed to detect impact events during a collision or
accident so that the hydrogen gas supply is immediately cutoff. Also,
the high-voltage relay is activated to cutoff the supply of electric power
to the fuel cell stack and high-voltage battery. Moreover, the FCEV
satisfies international electrical safety standards for collisions and
accidents.

44. Should I take any special safety precau-

tions in the event of a collision or acci-
dent?

Despite the uniqueness of the hydrogen FCEV, you do not have to
take any special safety precautions in the event of a minor collision or
accident. In the event of a minor accident, turn off the vehicle to cutoff
the supply of electric power and hydrogen gas. Also, the FCEV is
equipped with collision sensors at the front and rear of the vehicle so
those sensors are activated during an actual collision to automatically
cutoff the supply of power and hydrogen to ensure driver and passen-
ger safety. For other situations, follow the same procedures as you
would with a standard vehicle. Depending on the severity of the colli-
sion or accident, take appropriate measures.

45. Is a high-voltage battery designed to

ensure occupant safety? Can it explode
from a collision?

Our battery packs are designed to prevent any explosion due to
physical impact or damage, and they fully satisfy international safety
standards.

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Questions

Answers

Vehicle

Accidents/

Towing

(5 items)

46. Is a hydrogen tank designed to ensure

occupant safety? Can it explode from a
collision?

The hydrogen tank is designed to prevent any risk of explosion. It is
completely safe.

47. How should the FCEV be towed, and

what precautions should be taken?

The FCEV can be towed in the same manner as standard vehicles. If
you need emergency towing, it is recommended that you contact an
authorized HYUNDAI dealer. To avoid damage to the vehicle, you
need to follow proper pulling and towing procedures. The FCEV is
equipped with a front wheel drive (FWD) motor, so use a flatbed or
wheel dolly to tow the vehicle. If the front wheels touch the road sur-
face while being towed, they will rotate and this can cause the FWD
motor to generate electricity. This can cause unwanted failure of the
FCEV.

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Category

Questions

Answers

Explosion or

Fire (5 items)

48. What should I do if the FCEV catches

fire?

1. Stop driving the car. Move the shift to P (Park), then step on the

brake to turn OFF the vehicle. The fuel cell stack is shut down,
which cuts off the supply of hydrogen fuel.

2. If possible, open the windows to ventilate the air.

3. If the fire is small enough to get under your own control, use the fire

extinguisher to put it out.

If the fire is much larger, get out of your car and contact the local
fire station to report your FECV is on fire. DO NOT get close to your
car before the fire is completely extinguished.

49. In case of vehicle fire, should I use the

fire extinguisher? Can I use water to
extinguish the fire?

In the event your FCEV catches fire with the power system OFF, the
power source of the high-voltage system is cut off, so you are unlikely
to get shocked while you put out the fire using water. (Even when the
vehicle is submerged in water, there is no risk of getting shocked.)

However, if your car catches fire with the ignition ON, you MUST use
the fire extinguisher. Any attempt to extinguish the fire with water may
cause electric shock.

50. What kind of fire extinguisher should I

use?

It is recommended that you use a dedicated fire extinguisher (CO2)
for an electrical fire of the high-voltage system.

51. Can the hydrogen tank explode if it

overheats in very hot weather?

The hydrogen tank passed a high temperature test and is deemed
safe, so it is unlikely to explode.

52. In case of vehicle fire, is it possible that

the hydrogen tank will explode?

In case of vehicle fire, a heat-sensitive safety valve is activated to
exhaust the hydrogen gas downward from the tank by force.
Therefore, the hydrogen tank is unlikely to explode. However, addi-
tional flames can flare up from the forced exhaustion of the gas, so
please evacuate to a safe place far away from the vehicle.

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Your vehicle at a glance

1. Hood......................................................3-44

2. Headlight ..............................................7-58

3. Turn signal/daytime running lamp/

position lamp ........................................7-58

4. Tires and wheels ............................7-29, 8-4

5. Side view mirror ....................................3-32

6. Wide sunroof ........................................3-39

7. Front windshield wiper ..............3-107, 7-24

8. Windows ................................................3-35

9. Front radar ............................................5-45

OFE019001L

The actual shape may differ from the illustration.

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ehicle at a glance

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1. Doors ....................................................3-12

2. Fuel filler door ......................................3-57

3. Rear lamps ............................................7-59

4. Backup lamps........................................7-59

5. Liftgate ..................................................3-45

6. High mounted stop lamps ....................7-59

7. Rear window defroster ........................3-165

8. Wide-rear view camera ......................3-112

9. Antenna ..................................................4-2

10. Rear window wiper ..................3-107, 7-26

OFE018002N

The actual shape may differ from the illustration.

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Your vehicle at a glance

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1. Inside door handle ................................3-15

2. Side view mirror folding switch ..............3-32

3. Side view mirror control switch ..............3-31

4. Central door lock switch ........................3-15

5. Power window lock switch......................3-38

6. Power window switches ........................3-35

7. Instrument panel illumination control

switch ....................................................3-62

8. ESC OFF button ....................................5-32

9. H2O OUT ..............................................3-92

10. Lane Safety button ..............................5-58

11. Blind-Spot Safety button ......................5-69

12. Power liftgate button ............................3-50

13. 12 V battery reset button ......................6-5

14. Steering wheel tilt/telescope lever ......3-22

15. Steering wheel ....................................3-21

16. Seat........................................................2-4

17. Hood release lever ..............................3-44

18. Power outlet, USB charger ....3-171, 3-174

19. Fuel filler door opener button ..............3-57

OFE013003

The actual shape may differ from the illustration.

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The actual shape may differ from the illustration.

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ehicle at a glance

1. Instrument cluster ....................................3-60

2. Horn ........................................................3-23

3. Driver's front air bag ................................2-49

4. POWER button ..........................................5-6

5. Light control ............................................3-94

6. Wiper/Washer ........................................3-107

7. Infotainment system ......Infotainment manual

8. Hazard warning flasher ............................6-2

9. Climate control system ..........................3-151

10. Passenger's front air bag ......................2-49

11. Glove box ............................................3-168

12. USB Port..................................................4-2

13. Reduction gear (Shift button) ................5-11

14. Drive mode button ................................5-38

15. Parking/View button ............................3-112

16. Parking Safety button ..........................3-113

17. Parking Assist button ..........................3-124

18. DIS controller ..............Infotainment manual

19. Cup holder ..........................................3-169

20. Steering wheel audio controls ................4-3

21. Trip computer ........................................3-88

Driving Assist button..............................5-94

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1. Brake fluid reservoir..........................7-19

2. Air cleaner.........................................7-20

3. Fuse box ...........................................7-53

4. Windshield washer fluid reservoir .....7-20

5. Device cooling coolant reservoir.......7-13

6. Device cooling radiator cap ..............7-14

7. Stack cooling coolant reservoir.........7-17

8. Stack cooling radiator cap ................7-17

OFE071001N

The actual Fuel cell power module compartment in the vehicle may differ from the illustration.

Safety system of your vehicle

Important Safety Precautions..............................2-2

Always Wear Your Seat Belt ..........................................2-2
Restrain All Children .........................................................2-2
Air Bag Hazards.................................................................2-2
Driver Distraction ..............................................................2-2
Control Your Speed...........................................................2-3
Keep Your Vehicle in Safe Condition............................2-3

Seats ........................................................................2-4

Safety Precautions ...........................................................2-5
Front Seats .........................................................................2-6
Rear Seats.........................................................................2-10
Head Restraints ...............................................................2-13
Seat Warmers and Air Ventilation Seats...................2-17

Seat Belts ..............................................................2-21

Seat Belt Safety Precautions.......................................2-21
Seat Belt Warning Light ................................................2-22
Seat Belt Restraint System...........................................2-24
Additional Seat Belt Safety Precautions...................2-32
Care of Seat Belts...........................................................2-35

Child Restraint System (CRS).............................2-36

Children Always in the Rear.........................................2-36

Selecting a Child Restraint System (CRS) .................2-37
Installing a Child Restraint System (CRS)..................2-39

Air Bag - Advanced Supplemental Restraint
System ...................................................................2-47

Where Are the Air Bags?..............................................2-49
How Does the Air Bag System Operate?..................2-52
What to Expect After an Air Bag Inflates................2-57
Occupant Classification System (OCS).......................2-58
Why Didn't My Air Bag Go Off in a Collision? ........2-60
SRS Care............................................................................2-60
Additional Safety Precautions .....................................2-60
Air Bag Warning Labels .................................................2-60
Why Didn't My Air Bag Go Off in a Collision? ........2-63
SRS Care............................................................................2-68
Additional Safety Precautions .....................................2-69
Air Bag Warning Labels .................................................2-69

Active Hood Lift System .....................................2-70

System activation ............................................................2-70
System limitation .............................................................2-71
System malfunction........................................................2-72

This chapter provides you with important information about how to protect yourself and your passengers.
It explains how to properly use your seats and seat belts, and how your air bags work.
Additionally, this chapter explains how to properly restrain infants and children in your vehicle.

2-2

You will find many safety precautions
and recommendations throughout
this section, and throughout this
manual. The safety precautions in
this section are among the most
important.

Always Wear Your Seat Belt

A seat belt is your best protection in
all types of accidents. Air bags are
designed to supplement seat belts,
not replace them. So even though
your vehicle is equipped with air
bags, ALWAYS make sure you and
your passengers wear your seat
belts, and wear them properly.

Restrain All Children

All children under age 13 should ride
in your vehicle properly restrained in
a rear seat, not the front seat. Infants
and small children should be
restrained in an appropriate child
restraint. Larger children should use
a booster seat with the lap/shoulder
belt until they can use the seat belt
properly without a booster seat.

Air Bag Hazards

While air bags can save lives, they
can also cause serious or fatal
injuries to occupants who sit too
close to them, or who are not prop-
erly restrained. Infants, young chil-
dren, and shorter adults are at the
greatest risk of being injured by an
inflating air bag. Follow all instruc-
tions and warnings in this manual.

Driver Distraction

Driver distraction presents a serious
and potentially deadly danger, espe-
cially for inexperienced drivers.
Safety should be the first concern
when behind the wheel and drivers
need to be aware of the wide array of
potential distractions, such as
drowsiness, reaching for objects,
eating, personal grooming, other
passengers, and using cellular
phones.
Drivers can become distracted when
they take their eyes and attention off
the road or their hands off the wheel
to focus on activities other than driv-
ing. To reduce your risk of distraction
or getting into an accident:
• ALWAYS set up your mobile

devices (for example, MP3 players,
phones, navigation units, etc.)
when your vehicle is parked or
safely stopped.

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Safety system of your vehicle

Hyundai Nexo (2024 year). Manual in english - page 2